Crushing-roll.



R. C. NEWHOUSE.

CRUSHING ROLL.

APPLICATION FILED JULY 18. I914.

Patented Nov. 7, 1916.

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warren snares rannnn onnron RAY C. NEWHOUSE, F MILWAUKEE, WISCONSIN,ASSIGNOR T0 ALLIS-CHALMERS MANUFACTURING COMPANY, OF MILWAUKEE,WISCONSIN, A CORPORATION 0F DELAWARE.

'CRUSHING-ROLL.

Specification of Letters Patent. I

, Application filed July 18, 1914. Serial No. 852,116.

' a citizen of the United States, residing at Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented a certain new anduseful Improvement in Crushing-Rolls, of which the following is aspecification.

This invention relates to improvementsin the construction of crusherrolls of the type in which a plurality of breaker knobs or lugs projectfrom the periphery of the normally rotating roll.

An object of the invention is to provide a crushing roll which is simplein construction and efiicient in operation.

One of the more specific objects of the invention is to provideremovable wearing plates for the portions of the crushing roll which aresubjected to excessive wear, thus prolonging the life of the main bodyof the roll to a maximum extent by permitting ready renewal of the wornportions only.

The invention is especially applicable to crushing rolls in which acentral roll core is provided with a series of plates each havmg aplurality of breaker lugs thereon, the

plates forming an inclosing protecting shell or lining for the core.

A clear conception of an embodiment'of the invention may be had byreferring to theydrawing accompanying and forming a part of thisspecification in which like reference characters designate the same orsimilar parts in the several views.

Figure 1 is an elevation of a crushing roll and a fragment of the mainshaft thereof. Fig. 2 is a transverse vertical section through thecrushing roll and shaft, the section being taken along the line TTII ofFig. 1 looking in the direction of the arrow.

In the embodiment of the invention disclosed in the drawing, the rollcore 2 is'octagonal in shape and is secured to'the main shaft 1 by meansof keys. The periphery of the core 2 is provided with a series oflongitudinal projections 4, there being one central projection for eachof the eight outer fiat portions of the core 2. The lug plates 3, whichin the present embodiment are eight in number, are formed withlongitudinal recesses on their inner sides which coact with thelongitudinal projections 4 on the roll core 2, thus providing tongue andgroove connections between the plates and the roll core by means ofclamping screws 5 whichpass through openings in the plates 3 and arescrewed into the body of the core 2.

Each of the lug plates 3 is provided. with a longitudinallyextending'series of projections or breaker lugs 10, the leading endsof-which are in alinementwith each other. A recess 7 is formed in eachof the plates 3 adjacent the leading ends of each series of the lugs 10and extends along the entire length of the plate 3. A wearing plate 6coacts with and covers the entire leading end of each of the lugs 10 andhas a portion extending into the adjacent recess 7. Each wearing plate 6is secured to the leading end of the adjacent lug 10 by means of afastening screw 8 which is accessible from the leading end ofthe lug.Outward displacement of each wearing plate 6 is further prevented bymeans of a transverse key 9 which is fitted into adjacent recesses inthe hub 10 and wearing plate 6, see Fig. 2.

The wearing plates 6 are detachable by removal of the fastening screws 8and retaining keys 9, thus permitting ready renewal of the plates 6 whenthey become excessively worn. The lug plates 3 are imperforate at theportions thereof adjacent the wearing plates 6 and recesses 7, thuspreventing access of the material being crushed to the roll core in caseone of the wearing plates 6 should become displaced during operation ofthe crusher. As the plates 6 and the lug plates 3 are subjected to thegreatest wear, it will be noted that the life of the roll core may beextended to the maximum, by merely renewing the wearing plates 6 or thelug plate 3 as they become excessively worn. By making the plates 3,

. 6, replaceable, these plates may be made of Patented Nov. 7, 1916.

except for the penetration thereof by the clamping screws 5, the core 2is effectively protected against injury by the material being crushedeven if one or more of the wearing plates 6 should become dislodged. Theformation of the recesses 7 throughout the entire lengths of the plates3, permits ready formation of these recesses by means of a planer orsimilar machine, thus permitting reduction of the cost of manufacture ofthe plates 3 to a minimum. It will also be noted that the wearing plates6 are located at theoportion of the plate 3 which is directly oppositethe portion thereof which coacts with the projection 4 on the roll core.This disposition of the wearing plates 6 together with the location ofthe clamping screws 5 directly in front of the leading ends of the lugs10, produces a crushing roll of maximum strength to withstand thecrushing impact.

It should be understood that it is not de sired to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,

1. In a crushing roll, a roll core, a plurality of lug plates forming ashell for said core, a plurality of lugs projecting from each of saidplates, each of said plates having a longitudinal recess thereinadjacent the leading ends of the lugs thereon, and a wearing platesecured to the leading end of each of said lugs and having a portionextending into the adjacent recess.

2.'In a crushing roll, a roll core, a plurality of lug plates forming ashell for said core, a plurality of lugs projecting from .each of saidplates, each of said plates having a longitudinal recess thereinadjacent the leading ends of the lugs thereon, and a wearing plateremovably secpred to the leading end of eachof said lugs and having aportion thereof extending into the adjacent recess, said lug platesbeing imperforate at the portions thereof adjacent said recesses.

3. In a crushing roll, a roll core having a series of projections, aplurality of lug plates each having a recess engaging a projection onsaid core, said lug plates forming a shell for said core, a plurality oflugs projecting from each of said plates, each of said plates having asecond longitudinal recess therein adjacent the ends of said lugs anddirectly opposite the portion thereof in which said first mentionedrecess is formed,

and a wearing plate secured to the leading end of each of said lugs,said wearing plates having portions extending into said second mentionedrecesses and said lug plates being imperforate at the portions thereofadjacent said recesses.

at. In a crushing roll, a roll core having a series of longitudinalprojections, a plu rality of lug plates each having a longitudinalrecess coacting with a projection on said core, said lug plates formingashell for said core, a plurality of lugs projecting from each of saidplates, each of said plates having a second longitudinal recess thereinadjacent the leading ends of said lugs and directly opposite the portionthereof in which said first mentioned recess is formed, and a wearingplate detachably secured to the leading end of each of said lugs, saidwearing. plates having portions extending into said second mentionedrecesses.

In testimony whereof, the signature of the inventor is affixed hereto inthe presence of two witnesses.

v RAY C. NEWHOUSE.

Witnesses:

\V. H. LIEBER, G. F. DE WEIN.

